/*
 * Copyright 2012 The Netty Project
 *
 * The Netty Project licenses this file to you under the Apache License,
 * version 2.0 (the "License"); you may not use this file except in compliance
 * with the License. You may obtain a copy of the License at:
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations
 * under the License.
 */
package io.netty.example.http.websocketx.server;

import java.util.Date;
import java.util.Locale;

import io.netty.channel.Channel;
import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.SimpleChannelInboundHandler;
import io.netty.channel.group.ChannelGroup;
import io.netty.channel.group.DefaultChannelGroup;
import io.netty.example.http.websocketx.common.entity.NettyMessage;
import io.netty.handler.codec.http.websocketx.TextWebSocketFrame;
import io.netty.handler.codec.http.websocketx.WebSocketFrame;
import io.netty.util.concurrent.GlobalEventExecutor;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * Echoes uppercase content of text frames.
 */
public class WebSocketFrameHandler extends SimpleChannelInboundHandler<WebSocketFrame> {
    private static ChannelGroup recipients = new DefaultChannelGroup(GlobalEventExecutor.INSTANCE);

    private static final Logger logger = LoggerFactory.getLogger(WebSocketFrameHandler.class);

    @Override
    protected void channelRead0(ChannelHandlerContext ctx, WebSocketFrame frame) throws Exception {
        // ping and pong frames already handled

        if (frame instanceof TextWebSocketFrame) {
            // Send the uppercase string back.
            String request = ((TextWebSocketFrame) frame).text();
            logger.info("{} received {}", ctx.channel(), request);
//            ctx.channel().writeAndFlush(new TextWebSocketFrame(request.toUpperCase(Locale.US)));
            recipients.writeAndFlush(new TextWebSocketFrame(request.toUpperCase(Locale.SIMPLIFIED_CHINESE)));

        }else {
            String message = "unsupported frame type: " + frame.getClass().getName();
            throw new UnsupportedOperationException(message);
        }
    }


//    @Override
//    protected void channelRead0(ChannelHandlerContext ctx, Object msg) throws Exception {
//        NettyMessage message = (NettyMessage)msg;
//        logger.info("{} received {}", ctx.channel(), message.toString());
//        recipients.writeAndFlush(message);
//    }

    @Override
    public void channelActive(ChannelHandlerContext ctx) throws Exception {
        recipients.add(ctx.channel());
        logger.info("-------------------------------NEW CONNECTION");
        logger.info("最大内存:" + (Runtime.getRuntime().maxMemory() / 1024 / 1024));
        logger.info("已分配内存:" + (Runtime.getRuntime().totalMemory() / 1024 / 1024));
        logger.info("已分配内存中的剩余空间: " + (Runtime.getRuntime().freeMemory() / 1024 / 1024));
        logger.info("最大可用内存: " + (Runtime.getRuntime().maxMemory() - Runtime.getRuntime().totalMemory() + Runtime.getRuntime().freeMemory()) / 1024 / 1024);


        logger.info(new Date()+ctx.channel().id().toString()+" join");
        logger.info("join--current group size="+recipients.size());
    }

    @Override
    public void channelReadComplete(ChannelHandlerContext ctx) throws Exception {
        ctx.flush();
    }

    @Override
    public void handlerRemoved(ChannelHandlerContext ctx) throws Exception {
        logger.info(ctx.channel().id().toString()+" leave");
        recipients.remove(ctx.channel());
        logger.info("remove--current group size="+recipients.size());
        ctx.close();
    }
}
